Answer:
The most important part of the cycle is bacteria. Bacteria help the nitrogen change between states so it can be used. When nitrogen is absorbed by the soil, different bacteria help it to change states so it can be absorbed by plants. Animals then get their nitrogen from the plants.
Answer:
In this image the bird is eating an insect off of a leaf that is easy to see whereas the insect on the other leaf is camouflaged and still alive. This helps illustrate the concept of natural selection because the camouflage insect is able to survive longer and therefore reproduce more.
Answer:
The experiment wont work because both DNA and Protein contain nitrogen in their structure.
Explanation:
DNA and protein both contain nitrogen but phosphate group is present in DNA but absent in Protein.So when those 2 students tried to lebel the nitrogen of DNA it can be possible that nitrogen of protein molecule is being lebelled rather than the nitrogen of DNA.
As a result those 2 students do not found any trace of nitrogen of phage DNA inside the host Bacterium because the lebelled protein of the capsid remains outside the bacterium in form of ghost.
At high altitude, atmosphrric pressure is very high;
the partial pressures of ocygen are considerably lower,
the inhabitants must have a higher concentration of haemoglobin to increase surface area for carrying more oxygen
